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Finding the Fourth Proportional to 223.17, 336.45 and 207.51

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Solution

The fourth proportional to 223.17, 336.45 and 207.51 is: 312.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.17 : 336.45 = 207.51 : x
  2. Step 2: Convert to fraction form
    223.17/336.45 = 207.51/x
  3. Step 3: Cross multiply
    223.17x = 336.45 × 207.51
  4. Step 4: Simplify right side
    223.17x = 69,816.74
  5. Step 5: Solve for x
    x = 69,816.74/223.17
  6. Step 6: Final answer
    x = 312.84

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.